M41TC8025
Highly accurate, temperature-compensated serial real-time clock (RTC) with embedded crystal-
Evaluation
The M41TC8025 is a serial I2C real-time clock (RTC) incorporating temperature compensation to maintain accurate timekeeping over the extended temperature range of -45 to +70 °C or the industrial temperature range of -40 to +85 °C. In addition to providing date and time (seconds, minutes, hours, day-of-week, date (day of month), month and year), the device also provides an alarm function, fixed-cycle timer, time update interrupt and programmable frequency outputs (1 Hz, 1 KHz and 32 KHz).
The M41TC8025 is provided in a 200-mil, 14-pin SOIC package.
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Datasheet
Key Features
- Embedded high-stability 32 KHz DTCXO
- Accuracy: ±3.8 ppm max from 0 to 50°C
- Supply voltage: 1.6 to 5.5 V
- Current: 0.8 μA typical at 3.0 V
- 400 kHz I2C interface
- Time-of-day alarm (with interrupt)
- Fixed-cycle timer interrupt function
- Time update interrupt function
- Programmable frequency output: 1 Hz, 1 KHz and 32 KHz
- Registers for seconds, minutes, hours, day-of-week, date (day of month), month and year with automatic leap year compensation
- Programmable temperature compensation intervals: 0.5 s, 2 s (default), 10 s, 30 s
Design Resources
TopTechnical Documentation
Product Specifications
| Description | Version | Size |
|---|---|---|
DS8923: 温度补偿I²C 串行实时时钟（RTC）
|
1.0 | 703 KB |
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DS8923: Highly accurate, temperature-compensated serial real-time clock (RTC) with embedded crystal
|
4.0 | 1,269 KB |
|
DB1729: Highly accurate, temperature-compensated serial real-time clock (RTC) with embedded crystal
|
3.0 | 185 KB |
Application Notes
| Description | Version | Size |
|---|---|---|
|
AN1011: Battery technology used in NVRAM and real-time clock (RTC) products from ST
|
4.0 | 248 KB |
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AN1572: Power-down time-stamp function in serial real-time clocks (RTCs)
|
2.0 | 171 KB |
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AN1879: How to use M41ST87 tamper detect and RAM clear
|
4.2 | 70 KB |
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AN3060: Applications guide for serial real-time clocks (RTCs)
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2.0 | 355 KB |
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AN934: How to use the digital calibration feature in TIMEKEEPER® and serial real-time clock (RTC) products
|
4.1 | 123 KB |
Technical Notes & Articles
| Description | Version | Size |
|---|---|---|
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TA0344: Highly accurate, automatic temperature-compensated real-time clock (RTC) solution
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1.0 | 251 KB |
Related Tools and Software
Related Tools and Software
| Part Number | Description |
|---|---|
| STSW-SRTC001 | I2C code for Serial RTC |
| STSW-SRTC002 | SPI code -Serial RTC |
Publications and Collaterals
Flyer
| Description | Version | Size |
|---|---|---|
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M41TC8025 - Temperature-compensated I2C serial RTC
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1,016 KB |
Brochure
| Description | Version | Size |
|---|---|---|
|
Smart grid distribution and smart meters - Energy-efficient solutions
|
1.0 | 2,118 KB |
Sample & Buy
Top| Part Number | Marketing Status | Package | Packing Type | Operating Temperature (min) | Operating Temperature (max) | NVRAM size | Automotive Grade | Order From ST | Unit Price (US$)* @ 1000 | Distributor Availability | RoHS Compliance Grade | Download Material Declaration** |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| M41TC8025AMC6F | Active | SOIC 14L 200MIL BODY | Tape And Reel | -40 | 85 | _ | - | 2.8 | No data reported, please contact our Distributors | Ecopack2 | PDF XML | |
| M41TC8025CMC7F | Evaluation | SOIC 14L 200MIL BODY | Tape And Reel | -40 | 70 | _ | - | No data reported, please contact our Distributors | Ecopack2 | PDF XML | ||
(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors (**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices. |
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